Home / 66,679.20-92,026-38,386.08

Finding the Fourth Proportional to 66,679.20, 92,026 and 38,386.08

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Solution

The fourth proportional to 66,679.20, 92,026 and 38,386.08 is: 52,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,679.20 : 92,026 = 38,386.08 : x
  2. Step 2: Convert to fraction form
    66,679.20/92,026 = 38,386.08/x
  3. Step 3: Cross multiply
    66,679.20x = 92,026 × 38,386.08
  4. Step 4: Simplify right side
    66,679.20x = 3,532,517,398.08
  5. Step 5: Solve for x
    x = 3,532,517,398.08/66,679.20
  6. Step 6: Final answer
    x = 52,977.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.